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Titre: | Numerical study of critical properties and hidden orders in dimerized spin ladders |
Auteurs: | Gibson, Sandra J. Meyer, Ralf Chitov, Gennady Y. |
Mots clés: | Quantum spin systems;Spin chain models |
Date publié: | 29-mar-2011 |
Éditeur: | American Physical Society |
Citation: | Sandra J. Gibson, R. Meyer, Gennady Y. Chitov, Numerical study of critical properties and hidden orders in dimerized spin ladders, Phys. Rev. B 104423 (2011). |
Abstrait: | Dimerized antiferromagnetic spin-1 ladders are known to exhibit a quantum critical phase transition in the 2 ground state, the existence or absence of which is dependent on the dimerization pattern of the ladder. The gapped phases cannot be distinguished by the conventional Landau long-range order parameter. However, they possess a nonlocal (hidden) string-order parameter, which is nonzero in one phase and vanishes in the other. We use an exact diagonalization technique to calculate ground-state energies, energy gaps, and string-order parameters of dimerized two- and three-leg Heisenberg ladders, as well as a critical scaling analysis to yield estimates of the critical exponents ν and β. |
Description: | © 2011 American Physical Society |
URI: | https://doi.org/10.1103/PhysRevB.83.104423 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.83.104423 https://zone.biblio.laurentian.ca/handle/10219/2800 |
Apparaît dans les collections: | Articles Articles |
Fichiers dans cet item:
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